Arrange these animals in the correct order from the largest body mass to the smallest. The blue whale is the largest animal ever known to have existed on Earth - Larger than any dinosaur - Reaching lengths of up to 30 meters and weighing as much as 200 tonnes. The diversity of animal sizes is staggering, from microscopic creatures invisible to the naked eye to these behemoths of the ocean. On land, the African elephant claims the title of largest terrestrial animal. In between these extremes lie countless fascinating animals each adapted to their ecological niche. Body size affects metabolism, lifespan, reproduction rate, and ecological role in profound ways. Test your knowledge of animal size ranking here.
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